java设计模式之静态代理模式

代理接口：

public interface ProxyInterface {
public  abstract void action();
}

真实角色：

public class RealObject implements ProxyInterface{
@Override
public void action() {
// TODO Auto-generated method stub
System.out.println("Real Action method!");
}

}

代理角色

public class ProxyObject implements ProxyInterface{

private RealObject realObject;//代理角色中的真实角色
@Override
public void action() {
// TODO Auto-generated method stub
BeforeAction();
if(null == realObject){
realObject = new RealObject();
}
realObject.action();

AfterAction();
}
private void BeforeAction(){
System.out.println("do something before Action of RealObject");
}
private void AfterAction(){
System.out.println("do something after Action of RealObject");
}

}

测试类：

public class ProxyTest {
public static void main(String[]args){
ProxyObject proxyObject = new ProxyObject();//只能获取代理角色，
proxyObject.action();
}
}

测试结果;

do something before Action of RealObject
Real Action method!
do something after Action of RealObject